Trouble with float variables

Question

Hello!
I'm taking my first java class, and having some trouble. Our assignment is to "change your program so the variables you used to represent the x & y coordinates are declared as the float data type and change their default values to floats. Use the cast operator in your program so your program compiles and the washing maching displays on the screen."
But, when I changed the variables from "int xval=150" to floats, it won't compile. Anybody have any thoughts? Here's my code:
public class applet1 extends Applet {
public void paint ( Graphics g ) {
float xval=150.0f;
float yval=150.0f;
g.drawString ("Pete", 10, 10 );
g.drawString ("Assignment3 September 18, 2002", 10, 25 );
g.setColor(Color.white);
g.fillRect(xval - 150,yval - 150,350,350);
g.setColor(Color.black);
g.drawRect(xval-150,yval - 150,350,350);
g.drawLine(xval - 150,yval - 120,xval + 200,yval - 120);
g.fillOval(xval,yval - 145,20,20);
g.fillOval(xval - 105,yval - 145,20,20);
g.fillOval(xval + 100,yval - 145,20,20);
g.setColor(Color.lightGray);
g.fillOval(xval - 100,yval - 100,250,250);
g.setColor(Color.black);
g.drawOval(xval - 100,yval - 100,250,250);
g.setColor(Color.white);
g.fillOval(xval - 90,yval - 90,230,230);
g.setColor(Color.black);
g.drawOval(xval - 90,yval - 90,230,230);
g.setColor(Color.gray);
g.fillRect(xval + 170,yval - 110,15,25);
g.setColor(Color.black);
g.drawRect(xval + 170,yval - 110,15,25);
g.drawString ("Whirlpool", xval - 10, yval - 105 );

Answer 1

You can't use floats when the method requires ints; cast is needed.